def testGetSleepsToHonourRateLimit(self):
"""
The PeerIndex API limits calls to 1 per second. L{PeerIndex.get}
sleeps between calls to ensure this limit is honoured.
"""
timeModule = FakeTimeModule()
client = FakeHTTPClient()
headers = {'status': '200'}
result = {'name': 'Terry Jones', 'twitter': 'terrycojones',
'slug': 'terrycojones', 'known': 1, 'authority': 51,
'activity': 46, 'audience': 57, 'peerindex': 52,
'url': 'http:\\/\\/pi.mu\\/4O9',
'topics': ['languages', 'terry jones', 'catalonia',
'tim oreilly', 'writing']}
content = dumps(result)
response = client.expect(
'http://api.peerindex.net/1/profile/show.json?'
'id=terrycojones&api_key=key')
response.result(headers, content)
peerindex = PeerIndex('key', client=client, timeModule=timeModule)
self.assertEqual(result, peerindex.get('terrycojones'))
# No sleep occurs during the first call, because there's no rate
# limiting to do yet.
self.assertEqual(None, timeModule.lastSleep)
# Bump the current time by 0.25s to simulate time being spent handling
# the first request.
timeModule.currentTime = 100.25
response = client.expect(
'http://api.peerindex.net/1/profile/show.json?'
'id=terrycojones&api_key=key')
response.result(headers, content)
self.assertEqual(result, peerindex.get('terrycojones'))
# A sleep is performed between calls, with 0.05s of extra time, to
# ensure that we don't exceed the per-call rate limit.
self.assertEqual(0.75, timeModule.lastSleep)
def testGetOnlySleepsWhenNecessary(self):
"""
L{PeerIndex.get} doesn't sleep if more than one second has passed
between API calls.
"""
timeModule = FakeTimeModule()
client = FakeHTTPClient()
headers = {'status': '200'}
result = {'name': 'Terry Jones', 'twitter': 'terrycojones',
'slug': 'terrycojones', 'known': 1, 'authority': 51,
'activity': 46, 'audience': 57, 'peerindex': 52,
'url': 'http:\\/\\/pi.mu\\/4O9',
'topics': ['languages', 'terry jones', 'catalonia',
'tim oreilly', 'writing']}
content = dumps(result)
response = client.expect(
'http://api.peerindex.net/1/profile/show.json?'
'id=terrycojones&api_key=key')
response.result(headers, content)
peerindex = PeerIndex('key', client=client, timeModule=timeModule)
self.assertEqual(result, peerindex.get('terrycojones'))
# No sleep occurs during the first call, because there's no rate
# limiting to do yet.
self.assertEqual(None, timeModule.lastSleep)
# Bump the current time by 5s to simulate time being spent handling
# the first request.
timeModule.currentTime = 105.0
response = client.expect(
'http://api.peerindex.net/1/profile/show.json?'
'id=terrycojones&api_key=key')
response.result(headers, content)
self.assertEqual(result, peerindex.get('terrycojones'))
# No sleep occurs because more than one second has passed since the
# last API call.
self.assertEqual(None, timeModule.lastSleep)